Cycloidal disc reduction gearbox

Abstract

The utility model provides a cycloid disc reduction gearbox which is applied to the technical field of reduction gearboxes. The cycloidal disc reduction gearbox comprises a reduction gearbox body, an input shaft is arranged at one end of the reduction gearbox body, a first eccentric block is fixedly installed on the outer wall of the input shaft, a first cycloidal gear is fixedly connected to the outer wall of the first eccentric block, and a second eccentric block is fixedly installed on the outer wall of the input shaft. According to the cycloidal disc reduction gearbox, through the arrangement of the reduction gearbox body, the input shaft, the first eccentric block, the first cycloidal gear, the second eccentric block and the second cycloidal gear, when speed reduction work is conducted, the input shaft rotates, and the rotating input shaft drives the first cycloidal gear and the second cycloidal gear to conduct planetary motion through the first eccentric block and the second eccentric block; when the first cycloidal gear and the second cycloidal gear do planetary motion, the pin can drive the output shaft to rotate through the connecting plate, at the moment, the rotating speed of the output shaft is much lower than that of the input shaft, and speed reduction work is achieved. In this way, the speed reduction effect and maintenance convenience of the cycloid disc reduction gearbox are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of reduction gearbox especially relates to cycloidal disc reduction gearbox. BACKGROUND

[0002] Reduction gearbox is a kind of mechanical transmission device, and the main function is to reduce the rotational speed of input shaft and increase output torque to meet the power demand under different working conditions, and the cycloidal disc reduction gearbox is one of reduction gearboxes, which is a special transmission device applying planetary transmission principle, and the reduction is realized by the meshing of cycloidal gear and pin gear shell.It has the advantages of high efficiency, high torque, stability, high precision and long service life, and is suitable for various occasions requiring high precision, high efficiency and heavy load transmission, and the structure of cycloidal disc reduction gearbox is compact, small in size and light in weight, so it can be used in the equipment with strict requirements on space and weight, therefore, the cycloidal disc reduction gearbox is particularly needed.

[0003] However, the existing cycloidal disc reduction gearbox mostly has only one set of cycloidal gears inside, and the reduction effect of the cycloidal disc reduction gearbox is poor, and secondly, most of the cycloidal disc reduction gearboxes need to be disassembled when lubricating, which can easily damage the internal parts during lubrication. UTILITY MODEL CONTENTS

[0004] In view of the above shortcomings of the prior art, the purpose of the utility model is to provide a cycloidal disc reduction gearbox to solve the problems of the existing cycloidal disc reduction gearbox, most of which have only one set of cycloidal gears inside, and the reduction effect of the cycloidal disc reduction gearbox is poor, and secondly, most of the cycloidal disc reduction gearboxes need to be disassembled when lubricating, which can easily damage the internal parts during lubrication.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a cycloidal disc reduction gearbox, comprising a reduction gearbox, one end of the reduction gearbox is provided with an input shaft, the outer wall of the input shaft is fixedly installed with a first eccentric block, the outer wall of the first eccentric block is fixedly connected with a first cycloidal gear, the outer wall of the input shaft is fixedly installed with a second eccentric block, the outer wall of the second eccentric block is fixedly connected with a second cycloidal gear, the inner wall of the reduction gearbox is fixedly installed with a first connecting frame, the inner wall of the first connecting frame is fixedly installed with a pin gear pin, one end of the pin gear pin is fixedly connected with a second connecting frame, one end of the first cycloidal gear is connected with a stud pin, the stud pin is fixedly connected with a connecting plate on one side surface, the connecting plate is fixedly connected with an output shaft on one side surface, one end of the reduction gearbox is provided with a lubricating mechanism.

[0006] The lubricating mechanism comprises an oil storage tank, an oil injection pipe, a rotating rod, a rotating plate, a first sealing ring, a second sealing ring, a connecting shell, a spring, a moving block, a limiting rod, a limiting block, a limiting groove, an oil storage groove and an oil outlet pipe, the upper side surface of the speed reducer is fixedly installed with the oil storage tank, the upper end of the oil storage tank is provided with the oil injection pipe, one end of the speed reducer is provided with the rotating rod, one end of the rotating rod is fixedly connected with the rotating plate, the inside of the speed reducer is installed with the first sealing ring, and the outer wall of the rotating plate is fixedly installed with the second sealing ring.

[0007] Preferably, one side surface of the rotating rod is fixedly installed with the connecting shell, the inside of the connecting shell is fixedly installed with the spring, one end of the spring is fixedly connected with the moving block, one end of the moving block is connected with the limiting rod, one side surface of the limiting block is fixedly installed on one side surface of the speed reducer, the limiting groove is arranged on one side surface of the limiting block, the oil storage groove is arranged in the speed reducer, and the oil outlet pipe is arranged at the lower end of the speed reducer.

[0008] Preferably, the input shaft and the output shaft are connected with the speed reducer through bearings, the first eccentric block and the speed reducer constitute a rotating structure through the input shaft, and the first cycloid gear and the needle pin are in meshing connection.

[0009] Preferably, the two ends of the needle pin are fixedly connected with the first connecting frame and the second connecting frame respectively, and one end of the column pin penetrates through the first cycloid gear and the second cycloid gear.

[0010] Preferably, the rotating rod is connected with the speed reducer through a bearing, and the rotating plate and the speed reducer constitute a rotating structure through the rotating rod.

[0011] Preferably, the moving block and the connecting shell constitute an extension structure through the spring.

[0012] Preferably, the limiting grooves are arranged at equal intervals on one side surface of the limiting block.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] (1) By adopting the double-cycloid gear (first cycloid gear and second cycloid gear) structure, compared with the traditional single-cycloid gear design, the speed reduction effect of the speed reducer can be significantly improved. This design can effectively convert the high-speed rotation of the input shaft into low-speed high-torque output of the output shaft, and meet various occasions requiring high precision, high efficiency and heavy load transmission.

[0015] (2) By designing a special lubricating mechanism, including oil tank, rotating rod, rotating plate and other components, so that in the process of lubrication, without disassembling the shell of the reduction box, thereby avoiding the damage to the internal parts during lubrication. Through the operation of the rotating rod and rotating plate, the flow of lubricating oil can be easily controlled, automatic lubrication is realized, and the convenience and efficiency of maintenance are improved.

[0016] (3) The first sealing ring and the second sealing ring are arranged in the lubricating mechanism, the sealing property between the rotating plate and the reduction box is guaranteed, the leakage of the lubricating oil is effectively prevented, and the working reliability and service life of the reduction box are improved. Through the design of the limiting groove and the limiting rod, the angle of the rotating plate can be easily adjusted, so that the flow rate of the lubricating oil is controlled, and the lubrication demand under different working conditions is met.

[0017] (4) The structure of the cycloid disc reduction box is compact, small in size and light in weight, which makes it particularly suitable for devices with strict requirements on space and weight.

[0018] In summary, the utility model discloses a double-cycloid wheel structure and a convenient lubricating mechanism design, which significantly improves the reduction effect and maintenance convenience of the reduction box, enhances the sealing property and applicability, and has a wide application prospect.

[0019] It should be understood that the content described in the utility model content part is not intended to limit the key or important features of the embodiments of the utility model, nor is it intended to limit the scope of the utility model. Other features of the utility model will become apparent through the following description. BRIEF DESCRIPTION OF DRAWINGS

[0020] The above and other features, advantages, and aspects of the embodiments of the utility model will become more apparent with reference to the following detailed description in conjunction with the accompanying drawings. The drawings are used to better understand the scheme, and do not constitute a limitation on the utility model. In the drawings, the same or similar reference signs represent the same or similar elements, wherein:

[0021] Figure 1 It is a cross-sectional appearance structure schematic view of the utility model;

[0022] Figure 2 It is a connecting plate and output shaft mutual cooperation structure schematic view of the utility model;

[0023] Figure 3 It is a first connecting frame and pin tooth pin mutual cooperation structure schematic view of the utility model;

[0024] Figure 4 It is a rotating rod and rotating plate mutual cooperation structure schematic view of the utility model;

[0025] Figure 5 It is a spring and moving block mutual cooperation structure schematic view of the utility model;

[0026] Figure 6 Figure 1 is a schematic view of the mutual cooperation structure of the speed reducer and the oil outlet pipe of the utility model.

[0027] In the figure: 1, speed reducer; 2, input shaft; 3, first eccentric block; 4, first cycloid gear; 5, second eccentric block; 6, second cycloid gear; 7, first connecting frame; 8, pin gear pin; 9, second connecting frame; 10, column pin; 11, connecting plate; 12, output shaft; 13, lubricating mechanism; 1301, oil tank; 1302, oil filling pipe; 1303, rotating rod; 1304, rotating plate; 1305, first sealing ring; 1306, second sealing ring; 1307, connecting shell; 1308, spring; 1309, moving block; 1310, limiting rod; 1311, limiting block; 1312, limiting groove; 1313, oil storage groove; 1314, oil outlet pipe. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model more clear, the technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor fall within the scope of protection of the utility model.

[0029] In order to make the above-mentioned purpose, features and advantages of the utility model more obvious and easy to understand, the utility model will be further described in detail below in combination with the drawings and specific embodiments.

[0030] Please refer to Figures 1-6The utility model provides technical scheme: a cycloid disc reduction gearbox, including reduction gearbox 1, the one end of reduction gearbox 1 is provided with input shaft 2, the outer wall fixed mounting of input shaft 2 has first eccentric block 3, the outer wall fixed connection of first eccentric block 3 has first cycloid gear 4, the outer wall fixed mounting of input shaft 2 has second eccentric block 5, the outer wall fixed connection of second eccentric block 5 has second cycloid gear 6, the inner wall fixed mounting of reduction gearbox 1 has first connecting frame 7, the inner wall fixed mounting of first connecting frame 7 has needle tooth pin 8, one end fixed connection of needle tooth pin 8 has second connecting frame 9, one end connection of first cycloid gear 4 has column pin 10, the one side surface fixed connection of column pin 10 has connecting plate 11, the one side surface fixed connection of connecting plate 11 has output shaft 12, the one end of reduction gearbox 1 is provided with lubricating mechanism 13, through the setting of reduction gearbox 1, input shaft 2, first eccentric block 3, first cycloid gear 4, second eccentric block 5, second cycloid gear 6, first connecting frame 7, needle tooth pin 8, second connecting frame 9, column pin 10, connecting plate 11 and output shaft 12, when carrying out reduction work, input shaft 2 high speed rotates, and the input shaft 2 of rotation is driven first cycloid gear 4 and second cycloid gear 6 rotation through first eccentric block 3 and second eccentric block 5, at this moment under the influence of needle tooth pin 8, first cycloid gear 4 and second cycloid gear 6 will carry out planetary motion, and column pin 10 will drive output shaft 12 rotation through connecting plate 11, at this moment the rotation speed of output shaft 12 is much lower than the rotation speed of input shaft 2, has realized reduction work, and the double cycloid gear structure of first cycloid gear 4 and second cycloid gear 6 makes the reduction effect better.

[0031] Further, the lubricating mechanism 13 comprises an oil storage tank 1301, an oil injection pipe 1302, a rotating rod 1303, a rotating plate 1304, a first sealing ring 1305, a second sealing ring 1306, a connecting shell 1307, a spring 1308, a moving block 1309, a limiting rod 1310, a limiting block 1311, a limiting groove 1312, an oil storage groove 1313 and an oil outlet pipe 1314. The upper side surface of the speed reducer 1 is fixedly installed with the oil storage tank 1301. The upper end of the oil storage tank 1301 is provided with the oil injection pipe 1302. One end of the speed reducer 1 is provided with the rotating rod 1303. One end of the rotating rod 1303 is fixedly connected with the rotating plate 1304. The inside of the speed reducer 1 is installed with the first sealing ring 1305. The outer wall of the rotating plate 1304 is fixedly installed with the second sealing ring 1306. Through the arrangement of the oil storage tank 1301, the oil injection pipe 1302, the rotating rod 1303, the rotating plate 1304, the first sealing ring 1305 and the second sealing ring 1306, when the speed reducer 1 needs to be lubricated, the limiting rod 1310 is pulled to make one end thereof away from the limiting groove 1312, and then the rotating rod 1303 is rotated, so that the rotating rod 1303 rotates with the rotating plate 1304. The lubricating oil in the oil storage tank 1301 can flow into the speed reducer 1. The lubricating oil can be automatically brought to each part in the speed reducer 1 when the speed reducer 1 works, so as to automatically lubricate. After lubrication, the excess lubricating oil can flow into the oil storage groove 1313 and finally be discharged through the oil outlet pipe 1314, so as to avoid damage to the internal parts of the speed reducer 1 caused by lubrication, and prolong the service life of the speed reducer 1.

[0032] Further, one side surface of the rotating rod 1303 is fixedly installed with the connecting shell 1307. The inside of the connecting shell 1307 is fixedly installed with the spring 1308. One end of the spring 1308 is fixedly connected with the moving block 1309. One end of the moving block 1309 is connected with the limiting rod 1310. One side surface of the speed reducer 1 is fixedly installed with the limiting block 1311. One side surface of the limiting block 1311 is provided with the limiting groove 1312. The inside of the speed reducer 1 is provided with the oil storage groove 1313. The lower end of the speed reducer 1 is provided with the oil outlet pipe 1314. Through the arrangement of the first sealing ring 1305 and the second sealing ring 1306, the first sealing ring 1305 and the second sealing ring 1306 ensure the sealing between the rotating plate 1304 and the speed reducer 1, so as to prevent the lubricating oil from leaking.

[0033] Further, the input shaft 2 and the output shaft 12 are connected with the speed reducer 1 through bearings. The first eccentric block 3 is rotatably connected with the speed reducer 1 through the input shaft 2. The first cycloid wheel 4 and the pin gear pin 8 are in meshing connection. Through the arrangement of the first eccentric block 3, when the input shaft 2 rotates with the first eccentric block 3, the first cycloid wheel 4 will be brought to make planetary motion in the speed reducer 1.

[0034] Further, the two ends of the pin gear pin 8 are fixedly connected with the first connecting frame 7 and the second connecting frame 9 respectively, one end of the pin 10 penetrates the first cycloid 4 and the second cycloid 6, through the setting of the pin gear pin 8, the pin gear pin 8 is engaged with the first cycloid 4 and the second cycloid 6, so that when the first cycloid 4 and the second cycloid 6 rotate, the planetary motion under the influence of the pin gear pin 8 is carried out.

[0035] Further, the rotating rod 1303 is connected with the reduction box 1 through the bearing, the rotating plate 1304 is connected with the reduction box 1 through the rotating rod 1303, through the setting of the rotating rod 1303, the rotating rod 1303 can rotate with the rotating plate 1304, and the lubricating oil in the oil storage tank 1301 can flow into the reduction box 1.

[0036] Further, the moving block 1309 is connected with the connecting shell 1307 through the spring 1308, through the setting of the spring 1308, when the limiting rod 1310 is not subjected to tension, the spring 1308 allows the moving block 1309 to move horizontally with the limiting rod 1310, so that one end of the limiting rod 1310 enters the limiting groove 1312.

[0037] Further, the limiting grooves 1312 are equidistantly arranged on one side surface of the limiting block 1311, through the setting of the limiting grooves 1312, when the limiting rod 1310 enters the limiting grooves 1312 in different positions, the rotating plate 1304 can be fixed at different angles, so as to adjust the flow rate of the lubricating oil.

[0038] Working principle: when the reduction work is carried out, the input shaft 2 rotates at high speed, the rotating input shaft 2 drives the first cycloid 4 and the second cycloid 6 to rotate through the first eccentric block 3 and the second eccentric block 5, at this time, under the influence of the pin gear pin 8, the first cycloid 4 and the second cycloid 6 will carry out planetary motion, and the pin 10 will drive the output shaft 12 to rotate through the connecting plate 11, at this time, the rotation speed of the output shaft 12 is much lower than that of the input shaft 2, the reduction work is realized, the double-cycloid structure of the first cycloid 4 and the second cycloid 6 makes the reduction effect better, when the lubrication work of the reduction box 1 is needed, the limiting rod 1310 is pulled to make one end thereof away from the limiting groove 1312, then the rotating rod 1303 is rotated, the rotating rod 1303 will rotate with the rotating plate 1304, the lubricating oil in the oil storage tank 1301 can flow into the reduction box 1, the lubricating oil will be automatically brought to each part in the reduction box 1 when the reduction box 1 works, the automatic lubrication is carried out, after the lubrication, the excess lubricating oil will flow into the oil storage groove 1313, and finally is discharged through the oil outlet pipe 1314, which avoids that the lubrication work damages the internal parts of the reduction box 1, and prolongs the service life of the reduction box 1.

[0039] In summary, the utility model discloses a double cycloid wheel structure and convenient lubricating mechanism design, significantly improve the deceleration effect and maintenance convenience of speed reducer, enhance the sealing property and applicability simultaneously, have extensive application prospect.

[0040] The above specific embodiment of the utility model does not constitute the limit of the protection scope of the utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A cycloidal disc reduction gearbox comprising a reduction gearbox (1) characterised in that: One end of the speed reducer box (1) is provided with an input shaft (2), the outer wall of the input shaft (2) is fixedly installed with a first eccentric block (3), the outer wall of the first eccentric block (3) is fixedly connected with a first cycloid (4), the outer wall of the input shaft (2) is fixedly installed with a second eccentric block (5), the outer wall of the second eccentric block (5) is fixedly connected with a second cycloid (6), the inner wall of the speed reducer box (1) is fixedly installed with a first connecting frame (7), the inner wall of the first connecting frame (7) is fixedly installed with a pin tooth pin (8), one end of the pin tooth pin (8) is fixedly connected with a second connecting frame (9), one end of the first cycloid (4) is connected with a column pin (10), one side surface of the column pin (10) is fixedly connected with a connecting plate (11), one side surface of the connecting plate (11) is fixedly connected with an output shaft (12), one end of the speed reducer box (1) is provided with a lubricating mechanism (13). The lubricating mechanism (13) comprises an oil storage tank (1301), an oil injection pipe (1302), a rotating rod (1303), a rotating plate (1304), a first sealing ring (1305), a second sealing ring (1306), a connecting shell (1307), a spring (1308), a moving block (1309), a limiting rod (1310), a limiting block (1311), a limiting groove (1312), an oil storage groove (1313) and an oil outlet pipe (1314), the upper surface of the speed reducer box (1) is fixedly installed with the oil storage tank (1301), the upper end of the oil storage tank (1301) is provided with the oil injection pipe (1302), one end of the speed reducer box (1) is provided with the rotating rod (1303), one end of the rotating rod (1303) is fixedly connected with the rotating plate (1304), the inside of the speed reducer box (1) is provided with the first sealing ring (1305), the outer wall of the rotating plate (1304) is fixedly installed with the second sealing ring (1306).

2. The cycloidal disc reduction gearbox of claim 1, wherein: The side surface of the rotating rod (1303) is fixedly installed with the connecting shell (1307), the inside of the connecting shell (1307) is fixedly installed with the spring (1308), one end of the spring (1308) is fixedly connected with the moving block (1309), one end of the moving block (1309) is connected with the limiting rod (1310), the side surface of the speed reducer box (1) is fixedly installed with the limiting block (1311), the side surface of the limiting block (1311) is provided with the limiting groove (1312), the inside of the speed reducer box (1) is provided with the oil storage groove (1313), the lower end of the speed reducer box (1) is provided with the oil outlet pipe (1314).

3. The cycloidal disc reduction gearbox of claim 1, wherein: The input shaft (2) and the output shaft (12) are connected with the speed reducer box (1) through bearings, the first eccentric block (3) and the speed reducer box (1) constitute a rotating structure through the input shaft (2), the first cycloid (4) and the pin tooth pin (8) are in meshing connection.

4. The cycloidal disc reduction gearbox of claim 1, wherein: The two ends of the pin tooth pin (8) are fixedly connected with the first connecting frame (7) and the second connecting frame (9) respectively, one end of the column pin (10) penetrates through the first cycloid (4) and the second cycloid (6).

5. The cycloidal disc reduction gearbox of claim 2, wherein: The rotating rod (1303) is connected with the reduction box (1) through a bearing, and the rotating plate (1304) and the reduction box (1) constitute a rotating structure through the rotating rod (1303).

6. The cycloidal disc reduction gearbox of claim 2, wherein: The moving block (1309) and the connecting shell (1307) constitute a telescopic structure through the spring (1308).

7. The cycloid disc reduction gearbox according to claim 2, characterized in that: The limiting grooves (1312) are arranged at equal intervals on one side surface of the limiting block (1311).

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